U.S. patent number 11,243,921 [Application Number 16/087,008] was granted by the patent office on 2022-02-08 for database expansion system, equipment, and method of expanding database.
This patent grant is currently assigned to Beijing Jingdong Century Trading Co., Ltd., Beijing Jingdong Shangke Information Technology Co., Ltd.. The grantee listed for this patent is Beijing Jingdong Century Trading Co., Ltd., Beijing Jingdong Shangke Information Technology Co., Ltd.. Invention is credited to Gang He.
United States Patent |
11,243,921 |
He |
February 8, 2022 |
Database expansion system, equipment, and method of expanding
database
Abstract
A database expansion system, equipment, and a method of
expanding a database. The method includes: receiving modification
information instructing to modify a mapping relationship between a
virtual database and a database; reconfiguring according to the
modification information the mapping relationship; receiving a
database access request and analyzing the database access request
to obtain information about a target virtual database; acquiring,
according to the reconfigured mapping relationship, target database
related information corresponding to the target virtual database;
transmitting to a target database the database access request; and
acquiring from the target database data corresponding to the
database access request. The database expansion system, the
equipment, and the method of expanding the database implement
flexible capacity expansion of a database by mapping a virtual
database to an expanded database, reducing an expansion cost, and
maximally utilizing resources of a database server.
Inventors: |
He; Gang (Beijing,
CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
Beijing Jingdong Shangke Information Technology Co., Ltd.
Beijing Jingdong Century Trading Co., Ltd. |
Beijing
Beijing |
N/A
N/A |
CN
CN |
|
|
Assignee: |
Beijing Jingdong Shangke
Information Technology Co., Ltd. (Beijing, CN)
Beijing Jingdong Century Trading Co., Ltd. (Beijing,
CN)
|
Family
ID: |
1000006101908 |
Appl.
No.: |
16/087,008 |
Filed: |
January 6, 2017 |
PCT
Filed: |
January 06, 2017 |
PCT No.: |
PCT/CN2017/070394 |
371(c)(1),(2),(4) Date: |
September 20, 2018 |
PCT
Pub. No.: |
WO2017/161956 |
PCT
Pub. Date: |
September 28, 2017 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20190108163 A1 |
Apr 11, 2019 |
|
Foreign Application Priority Data
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|
|
|
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Mar 22, 2016 [CN] |
|
|
201610166294.4 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F
16/213 (20190101); G06F 16/217 (20190101); G06F
16/256 (20190101) |
Current International
Class: |
G06F
7/00 (20060101); G06F 16/21 (20190101); G06F
16/00 (20190101); G06F 16/25 (20190101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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101093502 |
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Dec 2007 |
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CN |
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101187937 |
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May 2008 |
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CN |
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102541990 |
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Jul 2012 |
|
CN |
|
102722667 |
|
Oct 2012 |
|
CN |
|
102737127 |
|
Oct 2012 |
|
CN |
|
105335477 |
|
Feb 2016 |
|
CN |
|
Other References
International Search Report for International Application No.
PCT/CN2017/070394, dated Apr. 11, 2017, with English translation (6
pages). cited by applicant .
Written Opinion of International Searching Authority for
International Application No. PCT/CN2017/070394, dated Apr. 11,
2017, with English translation (9 pages). cited by
applicant.
|
Primary Examiner: Pham; Tuan A
Attorney, Agent or Firm: Nixon Peabody LLP
Claims
What is claimed is:
1. A method for expanding a database, comprising: receiving
modification information instructing to modify a mapping
relationship between a virtual database and a database, wherein in
the mapping relationship, a first virtual database is mapped to a
first database; reconfiguring the mapping relationship based on the
modification information, wherein the reconfiguring the mapping
relationship based on the modification information comprises:
removing mapping from the first virtual database to the first
database, and mapping the first virtual database to a second
database having a different capacity from the first database;
receiving a database access request and analyzing the database
access request, to obtain information of a target virtual database;
acquiring information associated with a target database
corresponding to the target virtual database based on the
reconfigured mapping relationship, wherein the information
associated with the target database corresponding to the target
virtual database comprises a maximum number of connections of the
target database or a minimum number of connections of the target
database; transmitting the database access request to the target
database; and acquiring data corresponding to the database access
request from the target database, the target virtual database being
the virtual database to be accessed by the database access
request.
2. The method according to claim 1, wherein the acquiring
information associated with a target database corresponding to the
target virtual database based on the reconfigured mapping
relationship comprises: acquiring database connection pool
information of the target database.
3. The method according to claim 1, wherein the transmitting the
database access request to the target database comprises:
transmitting the database access request to the target database
through Java database connectivity (JDBC) or open database
connectivity (ODBC).
4. The method according to claim 1, wherein the modification
information comprises an identifier of the target virtual database,
and a database name, an IP address, or connection pool
configuration information of the target database.
5. The method according to claim 1, wherein the first virtual
database corresponds to an application server, and all database
access requests sent by the application server are transmitted to
the first virtual database corresponding to the application server,
wherein one or more client-side applications are installed in the
application server.
6. The method according to claim 1, wherein the information
associated with the target database corresponding to the target
virtual database comprises the maximum number of connections of the
target database, the minimum number of connections of the target
database and maximum waiting time of the target database.
7. A device for expanding a database, comprising: at least one
processor; and a memory storing instructions, the instructions when
executed by the at least one processor, cause the at least one
processor to perform operations, the operations comprising:
receiving modification information instructing to modify a mapping
relationship between a virtual database and a database, wherein in
the mapping relationship, a first virtual database is mapped to a
first database; reconfiguring the mapping relationship based on the
modification information, wherein the reconfiguring the mapping
relationship based on the modification information comprises:
removing mapping from the first virtual database to the first
database, and mapping the first virtual database to a second
database having a different capacity from the first database;
receiving a database access request and analyzing the database
access request, to obtain information of a target virtual database,
and acquiring information associated with a target database
corresponding to the target virtual database based on the
reconfigured mapping relationship, wherein the information
associated with the target database corresponding to the target
virtual database comprises a maximum number of connections of the
target database or a minimum number of connections of the target
database; and transmitting the database access request to the
target database, and acquiring data corresponding to the database
access request from the target database, the target virtual
database being the virtual database to be accessed by the database
access request.
8. The device according to claim 7, wherein the information
associated with a target database corresponding to the target
virtual database comprises database connection pool information of
the target database.
9. The device according to claim 7, wherein the transmitting the
database access request to the target database comprises:
transmitting the database access request to the target database
through Java database connectivity (JDBC) or open database
connectivity (ODBC).
10. The device according to claim 7, wherein the modification
information comprises an identifier of the target virtual database,
and a database name, an IP address, or connection pool
configuration information of the target database.
11. The device according to claim 7, wherein the operations further
comprising: querying the mapping relationship.
12. A system for expanding a database, comprising: the device for
expanding a database according to claim 7; and a control module
configured for receiving the modification information, and sending
the modification information to the device for expanding a database
corresponding to a virtual database specified in the modification
information.
13. A non-volatile computer storage medium, the computer storage
medium storing a computer readable instruction executable by a
processor, the computer readable instruction, when executed by the
processor, causing the processor to perform operations, the
operations comprising: receiving modification information
instructing to modify a mapping relationship between a virtual
database and a database, wherein in the mapping relationship, a
first virtual database is mapped to a first database; reconfiguring
the mapping relationship based on the modification information,
wherein the reconfiguring the mapping relationship based on the
modification information comprises: removing mapping from the first
virtual database to the first database, and mapping the first
virtual database to a second database having a different capacity
from the first database; receiving a database access request and
analyzing the database access request, to obtain information of a
target virtual database; acquiring information associated with a
target database corresponding to the target virtual database based
on the reconfigured mapping relationship, wherein the information
associated with the target database corresponding to the target
virtual database comprises a maximum number of connections of the
target database or a minimum number of connections of the target
database; transmitting the database access request to the target
database; and acquiring data corresponding to the database access
request from the target database, the target virtual database being
the virtual database to be accessed by the database access request.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a U.S. National Stage of International
Application No. PCT/CN2017/070394, filed on Jan. 6, 2017, which
claims priority to Chinese patent application No. 201610166294.4,
filed on Mar. 22, 2016. Both of the aforementioned applications are
hereby incorporated by reference in their entireties.
TECHNICAL FIELD
The present disclosure relates to the field of computer technology,
and specifically to a system and device for expanding a database,
and a method for expanding a database.
BACKGROUND
In the current Internet applications, due to the rapid service
development and the surging user numbers, it is unavoidable to keep
expanding the database. However, the database expansion inevitably
leads to the modification of the applications, and sometimes to the
modification of the data architectures. Because of the need to
modify the applications, it is cumbersome and time-consuming to
expand the database, and leading to high capacity expansion
costs.
In the existing technologies, a large number of data servers are
generally reserved in the initial stage of a project, to avoid the
problems that are likely to be resulted from the database
expansion. However, this will lead to serious waste of
resources.
SUMMARY
An object of the present disclosure is to provide a system and
device for expanding a database, and a method for expanding a
database, to solve the technical problems mentioned in the
Background section.
An aspect of the present disclosure provides a method for expanding
a database. The method includes: receiving modification information
instructing to modify a mapping relationship between a virtual
database and a database; reconfiguring the mapping relationship
based on the modification information; receiving a database access
request and analyzing the database access request, to obtain
information of a target virtual database; acquiring information
associated with a target database corresponding to the target
virtual database based on the reconfigured mapping relationship;
transmitting the database access request to the target database;
and acquiring data corresponding to the database access request
from the target database. The target virtual database is the
virtual database to be accessed by the database access request.
Optionally, the acquiring information associated with a target
database corresponding to the target virtual database based on the
reconfigured mapping relationship includes: acquiring database
connection pool information of the target database.
Optionally, the transmitting the database access request to the
target database includes: transmitting the database access request
to the target database through Java database connectivity (JDBC) or
open database connectivity (ODBC).
Optionally, the modification information includes an identifier of
the target virtual database, and a database name, an IP address, or
connection pool configuration information of the target
database.
Another aspect of the present disclosure provides a device for
expanding a database. The device for expanding a database includes:
a communication module configured for receiving modification
information instructing to modify a mapping relationship between a
virtual database and a database; a mapping management module
configured for reconfiguring the mapping relationship based on the
modification information; a request analysis module configured for
receiving a database access request and analyzing the database
access request, to obtain information of a target virtual database,
and acquiring information associated with a target database
corresponding to the target virtual database from the mapping
management module based on the reconfigured mapping relationship;
and a database access module configured for transmitting the
database access request to the target database, and acquiring data
corresponding to the database access request from the target
database. The target virtual database is the virtual database to be
accessed by the database access request.
Optionally, the information associated with a target database
corresponding to the target virtual database and acquired by the
request analysis module includes database connection pool
information of the target database.
Optionally, the database access module is further configured for:
transmitting the database access request to the target database
through Java database connectivity (JDBC) or open database
connectivity (ODBC).
Optionally, the modification information includes an identifier of
the target virtual database, and a database name, an IP address, or
connection pool configuration information of the target
database.
Optionally, the mapping management module is further configured for
querying the mapping relationship.
Still another aspect of the disclosure provides a system for
expanding a database. The system for expanding a database includes:
the device for expanding a database; and a control module
configured for receiving the modification information, and sending
the modification information to the device for expanding a database
corresponding to a virtual database specified in the modification
information.
The system, device, and method for expanding a database according
to the present disclosure realize flexible capacity expansion of
the database by mapping the virtual database to the expanded
database, overcome the defects of capacity expansion of the
conventional database, such as high costs, high risks, and long
duration, and can maximize the utilization of database server
resources.
BRIEF DESCRIPTION OF THE DRAWINGS
By reading and referring to detailed description on the
non-limiting embodiments in the following accompanying drawings,
other features, objects and advantages of the present disclosure
will become more apparent:
FIG. 1 is an architecture diagram of an exemplary system in which
the present disclosure may be implemented;
FIG. 2 shows a schematic diagram of a device for expanding a
database according to an embodiment of the present disclosure;
FIG. 3 shows a flowchart of a method for expanding a database
according to an embodiment of the present disclosure;
FIG. 4 shows a sequence diagram of the method for expanding a
database according to an embodiment of the present disclosure;
and
FIG. 5 is a structural schematic diagram of a computer system
adapted to implement a system for expanding a database according to
an embodiment of the present disclosure.
DETAILED DESCRIPTION OF EMBODIMENTS
The present disclosure will be further described below in detail in
combination with the accompanying drawings and the embodiments. It
may be appreciated that the specific embodiments described herein
are merely used for explaining the relevant disclosure, rather than
limiting the disclosure. In addition, it should be noted that, for
the ease of description, only the parts related to the relevant
disclosure are shown in the accompanying drawings.
It should be noted that the embodiments in the present disclosure
and the features in the embodiments may be combined with each other
on a non-conflict basis. The present disclosure will be described
below in detail with reference to the accompanying drawings and in
combination with the embodiments.
FIG. 1 shows an exemplary system architecture 100 in which an
embodiment of a system, device, or method for expanding a database
according to the present disclosure may be implemented.
As shown in FIG. 1, the system architecture 100 may include a
control server 101, application servers 102.sub.1-102.sub.n,
database servers 103.sub.1-103.sub.n, and networks 104-105. The
networks 104-105 respectively serve as a medium providing a
communication link medium between the control server 101 and the
application servers 102.sub.1-102.sub.n, and a medium providing a
communication link medium between the application servers
102.sub.1-102.sub.n and the database servers 103.sub.1-103.sub.n.
The network 104 may include a variety of connection types, such as
a wired communication link, a wireless communication link, or a
fiber cable.
The control server 101 is equipped with unlimited number of virtual
databases, and is used for managing a mapping relationship from all
virtual databases to databases in the database servers
103.sub.1-103.sub.n. Each virtual database corresponds to an
application server. That is, all database access requests sent by
each application server are transmitted to a virtual database
corresponding to the application server. The control server 101 is
further configured with a control module. The control module is
configured for receiving operation information (such as information
for changing the mapping relationship between the virtual database
and the database) inputted by a database administrator, and
transmitting, based on identifier information of a virtual database
included in the operation information, the operation information to
an application server corresponding to the virtual database.
The application servers 102.sub.1-102.sub.n may be equipped with a
variety of communication client-side applications, such as a web
browser application, a shopping application, a search application,
an instant messaging tool, an email client, and social platform
software. When executing the applications on the application
servers 102.sub.1-102.sub.n, appropriate database servers
103.sub.1-103.sub.n as data sources of the application servers
102.sub.1-102.sub.n may be accessed through the network 105, and
data as execution results of the applications may be received from
the database servers 103.sub.1-103.sub.n.
The control server 101, the application servers
102.sub.1-102.sub.n, and the database servers 103.sub.1-103.sub.n
may be a variety of electronic devices supporting database queries,
including but not limited to desktop computers, tablet computers,
laptop computers, or the like.
It should be noted that the method for expanding a database
provided by the embodiment of the present disclosure is generally
executed by the application servers 102.sub.1-102.sub.n.
Accordingly, the device for expanding a database is generally
provided in the application servers 102.sub.1-102.sub.n.
It should be understood that the numbers of application servers,
networks, and database servers in FIG. 1 are only illustrative.
There may be any number of application servers, networks, and
database servers based on implementation needs.
As mentioned above, when executing an application on an application
server, it is necessary to read data from a corresponding database
server as a data source of the application server. Therefore, it is
necessary to establish a data link between the application server
and the database server. In the present disclosure, each
application server 102 is equipped with a device 200 for expanding
a database, to enable the database to achieve capacity expansion
without affecting the application server running.
As an example, the device 200 for expanding a database configured
in the application server 102.sub.1 according to the embodiment of
the present disclosure is described hereinafter by referring to
FIG. 2.
As shown in FIG. 2, the device 200 for expanding a database
includes a communication module 201, a mapping management module
202, a request analysis module 203, and a database access module
204.
The communication module 201 is used for communicating with the
control server 101, to continuously synchronize a mapping
relationship from a virtual database corresponding to an
application server in which the communication module is located to
a database from the control server 101.
When receiving modification information instructing to modify the
mapping relationship from the virtual database to the database, the
communication module 201 sends the modification information to the
mapping management module 202.
Optionally, the modification information may include an identifier
of the virtual database, and a database name, an IP address, or
connection pool configuration information of a database
corresponding to the virtual database.
The mapping management module 202 is used for managing a mapping
relationship from a virtual database corresponding to an
application server in which the mapping management module 202 is
located to a database. When receiving the modification information
from the communication module 201, the mapping management module
202 reconfigures the mapping relationship from the virtual database
to the database based on the modification information, and stores
the reconfigured mapping relationship.
Optionally, the mapping management module 202 may be further used
for querying a mapping relationship between a virtual database and
a database stored therein based on a specific query condition.
The request analysis module 203 is configured for receiving all
database access requests of an application server in which the
request analysis module 203 is located, and analyzing the received
database access requests. The analysis result generally includes
information (such as the identifier of the virtual database) of the
virtual database to be accessed by the request (hereinafter
referred to as the target virtual database). Furthermore, the
request analysis module 203 further requests to the database
mapping management module 202 information associated with a
database (hereinafter referred to as the target database)
corresponding to the virtual database, and submits the received
database access request and the obtained information associated
with the target database to the database access module 204.
In an embodiment of the present disclosure, the information
associated with the target database acquired by the request
analysis module 203 is the database connection pool information of
the target database, such as maximum number of connections
(maxConn), maximum waiting time (MaxWaitTime), and minimum number
of connections (minConn).
The database access module 204 transmits the database access
request from the request analysis module 203 to the target
database, and acquires data corresponding to the database access
request from the target database.
Optionally, the database access module 204 may send the database
access request to the target database through Java database
connectivity (JDBC) or open database connectivity (ODBC).
A method for expanding a database according to the present
disclosure is described hereinafter by referring to FIG. 3.
As shown in FIG. 3, in step 301: receiving modification information
instructing to modify a mapping relationship between a virtual
database and a database.
In this step, the communication module 201 receives modification
information inputted by a database administrator on the control
server 101.
In an embodiment of the present disclosure, the modification
information may include an identifier of the virtual database, and
a database name, an IP address, or connection pool configuration
information of a database corresponding to the virtual database for
changing the mapping relationship.
Step 302: reconfiguring the mapping relationship between the
virtual database and the database based on the received
modification information.
It is assumed that the mapping relationship between the current
virtual database and the database is as shown in Table 1. Virtual
databases V.sub.1-V.sub.3 correspond to the application servers
102.sub.1-102.sub.3 respectively, and databases D.sub.1-D.sub.3 are
in the database server 103.sub.1.
TABLE-US-00001 TABLE 1 Virtual database Database V.sub.1 D.sub.1
V.sub.2 D.sub.2 V.sub.3 D.sub.3
If the modification information instructs to map the virtual
databases V.sub.1-V.sub.3 to databases D.sub.4-D.sub.6 in the
database server 103.sub.2, in this case, when receiving the
modification information, the mapping management module of the
device 200 for expanding a database in the application server
102.sub.2 remaps the virtual database V.sub.2 to the database
D.sub.4. Similarly, when receiving the modification information,
the mapping management module of the device 200 for expanding a
database in the application server 102.sub.2 remaps the virtual
database V.sub.2 to the database D.sub.5. When receiving the
modification information, the mapping management module of the
device 200 for expanding a database in the application server
102.sub.3 remaps the virtual database V.sub.3 to the database
D.sub.6. Therefore, the reconfigured mapping relationship is as
shown in Table 2.
TABLE-US-00002 TABLE 2 Virtual database Database V.sub.1 D.sub.4
V.sub.2 D.sub.5 V.sub.3 D.sub.6
Step 303: receiving a database access request and analyzing the
received database access request, to obtain information of the
virtual database included in the database access request.
After reconfiguring the mapping relationship between the virtual
database and the database in the step 302, if the request analysis
module 203 receives a database access request of an application
server in which the request analysis module 203 is located, then
the request analysis module analyzes information of the virtual
database (hereinafter referred to as the target virtual database)
included in the database access request, e.g., the identifier of
the virtual database.
Step 304: acquiring information associated with a database
(hereinafter referred to as the target database) corresponding to
the target virtual database based on the reconfigured mapping
relationship.
The request analysis module 203 requests information of the target
database from the mapping module 202 based on the obtained
information of the target virtual database. For example, in the
above examples, if a database access request of the application
server 102.sub.1 is received after reconfiguring the mapping
relationship, then the request analysis module 203 in the device
200 for expanding a database of the application server 102.sub.1
knows the target virtual database being V.sub.1 by analyzing the
database access request, and then knows the target database being
D.sub.4 from Table 2. Thus, in this case, the request analysis
module 203 may obtain information associated with the database
D.sub.4.
In an embodiment of the present disclosure, the information
associated with the target database may be the database connection
pool configuration information of the target database, such as
maximum number of connections (maxConn), maximum waiting time
(MaxWaitTime), and minimum number of connections (minConn).
Then, the request analysis module 203 sends the obtained
information of the target database and the received database access
request to the database access module 204.
Step 305: transmitting the received database access request to the
target database.
The database access module 204 transmits the received database
access request to the target database through Java database
connectivity (JDBC) or open database connectivity (ODBC).
Step 306: acquiring data corresponding to the database access
request from the target database.
The database access module 204 receives the database access result
from the target database via a connection pool of the target
database.
A sequence diagram of a method for expanding a database according
to the present disclosure is described hereinafter by referring to
FIG. 4.
As shown in FIG. 4, in step 401, a control module of the control
server 101 receives modification information for changing the
mapping relationship between the virtual database and the database
inputted by a database administrator.
In step 402, the control module sends the received modification
information to the communication module 201 of the device 200 in an
application server corresponding to a virtual database specified in
the modification information.
In step 403, the communication module 201 transmits the
modification information to the mapping management module 202.
In step 404, the mapping management module 202 reconfigures the
mapping relationship between the virtual database and the database
based on the received modification information.
In step 405, the request analysis module 203 receives a database
access request and analyzes the database access request, to obtain
information of a target virtual database, and acquires information
associated with a target database based on the reconfigured mapping
relationship.
In step 406, the request analysis module 203 transmits the received
database access request and the information of the target database
to the database access module 204.
In step 407, the database access module 204 sends the access
request to the target database, and acquires data corresponding to
the database access request from the target database.
The system, device, and method for expanding a database according
to the present disclosure realize flexible capacity expansion of
the database by mapping the virtual database to the expanded
database, overcome the defects of capacity expansion of the
conventional database, such as high costs, high risks, and long
duration, and can maximize the utilization of database server
resources.
A structural schematic diagram of a computer system 500 adapted to
implement a server according to an embodiment of the present
disclosure is shown hereinafter by referring to FIG. 5.
As shown in FIG. 5, the computer system 500 includes a central
processing unit (CPU) 501, which may execute various appropriate
actions and processes in accordance with a program stored in a
read-only memory (ROM) 502 or a program loaded into a random access
memory (RAM) 503 from a storage portion 508. The RAM 503 also
stores various programs and data required by operations of the
system 500. The CPU 501, the ROM 502 and the RAM 503 are connected
to each other through a bus 504. An input/output (I/O) interface
505 is also connected to the bus 604.
The following components are connected to the I/O interface 505: an
input portion 506 including a keyboard, a mouse etc.; an output
portion 507 comprising a cathode ray tube (CRT), a liquid crystal
display device (LCD), a speaker etc.; a storage portion 508
including a hard disk and the like; and a communication portion 509
comprising a network interface card, such as a LAN card and a
modem. The communication portion 509 performs communication
processes via a network, such as the Internet. A driver 510 is also
connected to the I/O interface 505 as required. A removable medium
511, such as a magnetic disk, an optical disk, a magneto-optical
disk, and a semiconductor memory, may be installed on the driver
510, to facilitate the retrieval of a computer program from the
removable medium 511, and the installation thereof on the storage
portion 508 as needed.
In particular, according to embodiments of the present disclosure,
the process described above with reference to the flow chart may be
implemented in a computer software program. For example, an
embodiment of the present disclosure includes a computer program
product, which comprises a computer program that is tangibly
embedded in a machine-readable medium. The computer program
comprises program codes for executing the method as illustrated in
the flow chart. In such an embodiment, the computer program may be
downloaded and installed from a network via the communication
portion 509, and/or may be installed from the removable media 511.
The computer program, when executed by the central processing unit
(CPU) 501, implements the above mentioned functionalities as
defined by the methods of the present disclosure.
The units involved in the embodiments of the present disclosure may
be implemented by means of software or hardware. The described
units may also be provided in a processor, for example, described
as: a processor, comprising a communication module, a mapping
management module, a request analysis module and a database access
module, where the names of these units do not in some cases
constitute a limitation to such units themselves.
As another aspect, the present disclosure further provides a
non-volatile computer storage medium. The non-volatile computer
storage medium may be a non-volatile computer storage medium
included in the apparatus in the above embodiments; and may also be
a non-volatile computer storage medium that separately exists
without being assembled into the terminal. One or more programs are
stored in the non-volatile computer storage medium. The one or more
programs, when executed by a device, cause the device to: receiving
modification information instructing to modify a mapping
relationship between a virtual database and a database;
reconfiguring the mapping relationship based on the modification
information; receiving a database access request and analyzing the
database access request, to obtain information of a target virtual
database; acquiring information associated with a target database
corresponding to the target virtual database based on the
reconfigured mapping relationship; transmitting the database access
request to the target database; and acquiring data corresponding to
the database access request from the target database. The target
virtual database is the virtual database to be accessed by the
database access request.
The above description only provides an explanation of the preferred
embodiments of the present disclosure and the technical principles
used. It should be appreciated by those skilled in the art that the
inventive scope of the present disclosure is not limited to the
technical solutions formed by the particular combinations of the
above-described technical features. The inventive scope should also
cover other technical solutions formed by any combinations of the
above-described technical features or equivalent features thereof
without departing from the concept of the disclosure. Technical
schemes formed by the above-described features being interchanged
with, but not limited to, technical features with similar functions
disclosed in the present disclosure are examples.
* * * * *